Add some color to your calendar with our liquid chalk ink markers! This Classic set comes with a fine tip, 3mm. These markers are perfect for our acrylic boards. They erase completely from acrylic, leaving no residue or staining. Just wet a paper towel with water, wipe off the ink, and dry with a dry paper towel. Non-toxic, Water Based, Dust & Odor Free MARKER USE: when you receive the markers, they will appear dry. They will need to be primed. Instructions are included, but know that it…